1N5287-1/TR

Overview

The Microchip Technology 1N5287-1/TR is a current regulator diode from the 1N5283-1 through 1N5314-1 series, designed for stable current regulation over a broad voltage range. It features a maximum peak operating voltage of 100V and a regulated current of 363µA. The device has a power dissipation rating of 500mW and operates within a temperature range of -65°C to +175°C. Packaged in an axial DO-7 (DO-204AA) housing with bulk tape-and-reel packaging, it serves as a counterpart to Zener diodes by regulating current rather than voltage.

Feature Summary

• Provides constant current regulation across a wide voltage span
• High source impedance for effective current limiting
• Qualified for military standards including JAN, JANTX, and JANTXV levels

Applications

• Constant current sources for LED driving
• Biasing circuits for transistors and active components
• Current limiting protection in sensitive electronic circuits

Procurement Notes

Verify the specific suffix '-TR' indicates tape-and-reel packaging versus bulk when sourcing. Confirm the manufacturer's latest datasheet for the 1N5283-1 thru 1N5314-1 series to ensure compliance with required military qualification levels such as JAN or JANTXV. Check RoHS status if environmental compliance is mandatory for the assembly process.

Selection Notes

Select this component when a fixed low-current regulation around 363µA is required independent of supply voltage fluctuations. Ensure the circuit voltage does not exceed the 100V maximum limit. Consider the DO-7 package size for through-hole mounting constraints. Compare against other series members like 1N5286-1 or 1N5288-1 if different current values are needed.

Part Context

This part belongs to the popular 1N5283-1 through 1N5314-1 series of 0.5-watt current regulators. These devices offer a selection of currents from 0.22 mA to 4.7 mA with standard 10% tolerances. They are JEDEC registered and provide a reliable alternative to Zener diodes for current-based regulation tasks in axial-leaded packages.

Replacement Considerations

Compatible substitutes include other parts from the same Microchip 1N5283-1 to 1N5314-1 series with similar current ratings. Cross-reference with generic 1N5287 equivalents from other manufacturers, ensuring voltage and current specifications match exactly.